Attachment for routing-machines



v. BOYLE ATTACHMENT FOR ROUTING MACHINES.

APPLICATION FILED DEC. I3, I916- 2 SHE:"TSSHEET I- V. ROYLE.

ATTACHMENT FOR ROUTING MACHINES.

APPLICATION FILED DEC. 13, ISIS. I

' Patented Sept. 21,1920.

2 SHEETS-SHEET 2.

I To aZZ whdm it may] concern:

' .Be it known that, I, VERNON BOYLE, 1a

the upperportion of a routing machine with 5 Y V Fig. 6 representsa'detail vertical section UNITED STATEQPJA T .QEFECE Q F vnimoiv BOYLE,or-ra'rnasoiv, NEW JERSEY.

ATTACHMENT Foe ROUTING-MACHINES.

citizen of the United States, and resident-of Paterson, in the county ofPas'saic and State 5. of New Jersey, have invented a new and usefulImprovement in Attachments for Routing-Machines, of which the followingisa.

specification.

This invention relates to an improvement in attachments for routing machnes, with the object in view of. providingjasiinple and efiective devicefor locking the cutter supporting bar to the guide rail. of routingmachines, designed to be used more'fparticu-v lady in conjunction withan ellipsograph'] attachment, whereby a series of concentric,

elliptical cuts may be made with a routing cutter ineach of a series ofplates (e. g. photoengraving' plates), 1 presented to the cutter,without resetting the device.

Another object is to provide a device which will, when locked tothe'guide rail, allow the cutter supporting bar a limited radialadjustment, whereby the space tween the cuts may be varied.

provements in the form, construction, and

arrangement of the several parts ofthe device whereby the above-namedand otherref.

sults may be" effectively attained. l

sents a whiteborder line, while the intervening strip between the cutspresents, a black my improved device applied thereto, and

showing an ellipsograph attachment secured v in position on the routingmachine. 7 v Fig. 2 represents a deta1l plan vlew, on

an enlarged scale, of the device app'liedto' the guide rail and holdingthe cutter supporting bar in one position, H Y

Fi 3represents a plan v ew another position,

Fig. 4 represents afront elevation same,

Fig.

5 represents aside elevation ofithe same,

I V Specification of Letters Patent.

.taken through one of the means for A further object is to providecertain im- In practice, when 'a finished photo en graving plate isprinted, the inner cut. preembo diment. of my invention" of the sameshowlng the cutter supporting bar held in the device to the guide rail,

I I ented Sept.f21, 1920. Application filedDecember 13,1916. Serial No.136,706.): i

Fig. 7 represents a plan view of a porj tion of an engraved plateshowing the cuts made with the routing cutters of, different diameters,and f Fig. 8 represents a vertical section'taken in the plane of theline VIII- VI [;II of Fig.7.

The portion of the routing'machine here" in shown isof well known andapproved construction, disclosed, for example,"in Letters Patent No.14-2826, dated December 16, 1890, and in a copending application SerialNo. 726069, filed October16, 1912, in which I am one of the jointapplicants; j The bed plate of the routing machine is denoted by 1; thepedestal on which it is mounted, by 2; the cutter supporting bar by 3;the cutter holder by 1, and the cutter by 5. These parts may be of anywell known or approved form and suitablewell known means may be employedfor driving and manipulating the cutter holder.

An. ellipsograph attachment, having a by thebedplat-e. The clamp 7 isarranged to be moved longitudinally in 7 suitable grooves 9 and lockedin various adjustments by means of aT-bolt 10, the headof which .fits inthe groove 9 and the stem of'which extendsupwardlythrough the clamp 7 inposition toreceive a hand wheel 11 for locking the'clamp to the bedplate.

The abutment 8 is arranged to be held in various positions by means of"a pin 12 depending therefrom, which is adapted to enter holes 13 in thebottom of. the groove 9.

The base frame 6 of the ellipsograph attachment has a tool holder 14,carrying a turret head 15 rotatively mounted on a stud 16 screwed. intothe holder. The turret head 15 is provided with a lining tool 17, and aseries of sockets 18 into which other tools" may be placed.

The table 19, to be cut, is mounted to rotate on'the base frame 6'andprovided with clamps 21 which The table is also provided with a seriesof handles'22 for conveniently rotating it on the base frame 6. A guiderail 23, which for supporting the plate 20 forms a rest for the cuttersupporting bar 3 28. The operatinglever 27; is fulcrunied The rods 25have a free vertical sliding movement within the standards and thus theguide rail 23 maybe elevated and depressed. To the lower endof' eachrod, one end of an operating lever 27 is coupled, the op'por,"

site end of said lever being connected with a foot pedal (not shown) bya connectingrod upon a swinging'link 29 attached to the bed plate 1,whichlink compensates for the tend ency of the end of the lever 27 totravelout of the line of movement of the rods 25,,thus

obviating the cramping ofrthe said rods,

which would otherwise occur. c a

While I have shown in the drawings only one head 24, rod" 25 andfstandard 26, it will] be'understoo'd that the guide rail will besimilarly supported at the opposite end.

Iii the foregoing, I have only described so muchof a routing machine andan ellipsograph attachment applied thereto. as will give a clearunderstanding of the application'of my invention. Iwill now proceed todescribe my invention and its function in connection with the-abovementioned ma; chines.

The body 30 of thelocking device is provided with offset portions 31,which are arranged toengage the guide rail'23 and support the body inany desired position throughout the length of the rail. The body 30 isheld against lateral movement by thumb screws; 32 (in the presentinstance two are shown),which have a screw threaded, engagement with thebody and are arranged in position to engage plugs 33. These plugs arebeveled at their lower ends, as'shown at- 34 in Fig. 6, and are moved ina "vertical direction toward the lower edge of tion, to receive ashank-4O depending froma I the guide rail, through a hole 35 in thebody,

by the inward movement of the thumb screws 32, which have chamferedpoints 36 to coact with the beveled edges 34 of the plugs. The plugs areheld with their beveled edges 34 in contact with the point 36 by meansof pins 37- fixed in the body and entering slots 38in the plugs- Thispin and slot engagement also limits the upward and downwardmovement ofeach of the plugs. l

A vertical'hub 39, having a socket therein,- extends outwardly from thebody 30 in posirocliing adjustment lever 41; The rocking movement of'this lever is controlled means of thumb screws 42, 43, which have ascrew threaded engagement" with ears .44. 45, on the lever 41, the freeends of which screwsjare arranged t'o be screwed into and outof contactwith the body 30,

The rockinglever is also provided withan arm 4'6'whi'ch extendsoutwardly therefrom, and has-a-ha11'dle47 for convenience inmanipulation, A stud 48 is carried by the arm 46 andis fittedtoreceive ahub 49 having a "horizontal lug 50, upon which is mounted a cradle 51'ior the reception of the cutter sup- .portinglbar The cradle is retainedrockingilever 41 may be .rigidlyrfastened to the hub ,39bya,horizontally sliding pin 54' which extends through'the hub and.projects a su fiicient distance to receivea wing nut 55.

The pin 54 is cut away at 56,;asshown in dotted linesin Figs; 2 and 3,which cutaway portion engages the shank 40 and locks-it tightly in itssocket when the wing-nubbears against the hub 39.

In operation, assuming that-:the bed plate 1, theellipsographattachment-,. and the? 5 plate to be cut, are in position,beneath'the router cutter 5, and thel-ellipsograph attach ment adjustedto cut a groove-such as that represented by 57 (Figs 7 'and-8) thecradle 51 is fitted to the arm'3 and the thumb screw 42 adjusted untilit contacts-with the body 30,as shownin Fig; 3. ;While, in thispositiomthe parts are locked by actuating the wing-nut 55 on the pin'54-and the bind- 7 ing screw 53, which latter secures thebart in a thecradle The screws 32 are also advanced so as to lock the supportingdeviceto the.

guiderail 23, as already described; With o the several parts thusadjusted, and locked,

the bar 3 may beloweredfbyactuating the parts 25,, 27 28, asalreadydescribed'until the cutter 5 enga 'es the work; whereupon the table 19with the plate 20 thereon may be rotated by the handles 22; Atthecompletion of, this cutting operation, the guide rail may be raisedthus withdrawing the;

cutter from its work.

If itis now desired to cut a-gro0ve;or' a rabbet (e. g. 58, Figs. 7 and8),,parallel to the groove 57; the wingnut 55 and binding screw 53'maybe loosenedandthe arm 47- swung until the cutter 5 is the desireddistance away from the groove already cut} In this positiomthe screw43is advanced until it engages thebody 30, and the wing nut and bindingscrew 53 again tightened.

The operation of the machine is now peated and the cut 58 effected.

In order to cut'identical, lines or grooves on additional; plates, theoperationalready described is' repeated, viz by first manipu-o latingthe handle 47 tolrockthe lever 41 so" that the screw 42 "contacts withthe body'3Q. v

thus holding the bar 3 in position for the. cutter to cut one line ontheplate after which the lever 41 may berocked so that the screw InFigs. '7 and 8 I have shown a plate having a groove 57 routed with acutter of small diameter and a rabbet 58 routed with a cutter of largediameter. This rabbet 58 forms an edge by Which the plate 20 may besecured to a block by nails 61. When the plate is printed, the groove 57is reproduced as a white border line and the intervening strip 59between the groove 57 and the rabbet 58, as a black border line.

hat I claim is 1. In a routing machine, the combination with a cuttersupporting bar, a cutter carried thereby and a vertically movable guiderail, of a device having a slidable engagement with said rail andadapted to be clamped thereto, and means cooperating with said deviceand arranged to engage said bar for freely moving it a limited distancein the device to enable the cutter to operate in predetermined places onthe work presented to it.

2. In a routing machine, the combination with a cutter supporting bar, acutter carried thereby and a guide rail, of a removable devicecomprising a body adapted to be clamped to said rail and meanscooperating with said body for engaging said bar, said means beingarranged to be moved a limited distance on the body.

3. In a routing machine, the combination with a cutter supporting bar, acutter carried thereby and a guide rail, of a removable devicecomprising a body adapted to be clamped to said rail and oscillatablemeans cooperating with said body for engaging said bar, said means beingarranged to be oscillated on the body.

4. In a routing machine, the combination with a cutter supporting bar, acutter carried thereby and a guide rail, of a removable devicecomprising a body adapted to be clamped to said rail, oscillatable meanscooperating with said body for engaging said bar and adjustable elementsmounted on the body for limiting the movement of said oscillatablemeans.

5. In a routing machine, the combinatlon with a cutter supporting bar, acutter carried therebyand a guide rail, of a removable device comprisinga body adapted to be V clamped to said rail, an arm pivoted thereon andmeans on said arm for engaging said bar. j

6. In a routing machine, the combination with a cutter supporting bar, acutter car- 7 ried thereby and a guide rail, of a removable.

device comprising a body adapted to be clamped to said rail, an armpivoted' thereon, movable elements mounted on the body for limiting themovement of said arm and means on the arm for engaging said bar.

7. In a routing machine, the combination 7 with a cutter supporting bar,a cutter cap- Y i able device for holding the bar to said rail ina-position to be rocked, said device comried thereby, and a guide rail,of a remov prising a body adapted to be clamped to said rail, an armpivoted thereon-and provided with means adjustably mounted in said armand coacting with said body for limiting the movement of said arm, andmeans mounted on said arm for engaging said bar.

8. In a routing machlne, the combination vwith a cutter supporting bar,a cutter carried thereby, and aguide rail, of a remov able device forlocking the bar to said rail, said device comprisinga body adapted to beclamped to said rail, an arm pivoted thereon, means for locking said armto the body, adjustable means coacting with the body for limiting themovement of said arm, means mounted on the arm for receiving said bar,and means for locking the bar to said last-named means. 7

' 9. In a routing machine, the combination with a cutter supporting bar,a cutter carried thereby, and a-vertically movable guide rail, of adevice adjustable on said rail for maintaining the bar in a positioncapable of a limited movement in various directions and with the cutterinpredetermined posi tion to be moved radially with respect to the work,and means for moving'the rail vertically to feed the cutter toward andaway from the work.

In testimony, that I claim the foregoing as my invention I have signedmy name this twelfth day of iDecember nineteen hundred and sixteen.

VERNON BOYLE.

